Newsletters <= 4.18.1 - Authenticated (Subscriber+) SQL Injection via 'id' Parameter

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-101325
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-31 09:16:32 UTC
Updated2026-10-31 09:16:32 UTC
DescriptionThe Newsletters plugin for WordPress is vulnerable to time-based SQL Injection via the 'id' parameter in all versions up to, and including, 4.18.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. An attacker can obtain the required nonce and subscriberauth cookie without a WordPress account by simply subscribing through the public newsletter form and opening the management link sent via email; the ownership check verifies only the subscriber_id field and does not validate that the injected id parameter belongs to the authenticated subscriber.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-89 | CWE-89 CWE-89 Improper Neutralization of Special Elements used in an SQL Command

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Contrid Newsletters affected 4.18.1 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.18.1/wp-mailinglist-plugin.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3756587/newsletters-lite/trunk/wp-mailinglist-plugi... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/d4bc05a2-25f9-4276-8541-a77ef... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.18.1/wp-mailinglist-plugin.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.18.1/includes/checkinit.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.18.1/models/subscriber.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: zickzick2 (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-28T14:11:06.000ZVendor Notified
CNA2026-10-30T20:12:10.000ZDisclosed

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